TY - JOUR T1 - Ultrafiltration to secure shellfish industrial activities: culture of microalgae and oyster fertilization A1 - Eljaddi,T. A1 - Ragueneau,S. A1 - Cordier,C A1 - Lange,A. A1 - Rabiller,Manuella A1 - Stavrakakis,Christophe A1 - Moulin,P. AD - Aix Marseille Univ., Centrale Marseille, CNRS, M2P2, Équipe Procédés Membranaires (EPM), Europôle de l’arbois, Bat. Laennec, Hall C, BP 80, 13545 Aix en Provence cedex, France AD - Vendée Naissain, Polder des Champs, 85230 Bouin, France AD - Ifremer, RBE-SG2M-Plateforme Mollusques Marins de Bouin, Station de Bouin, Polder des Champs, F-85230 Bouin, France UR - https://doi.org/10.1016/j.aquaeng.2021.102204 DO - 10.1016/j.aquaeng.2021.102204 KW - Membrane process KW - Hatchery KW - Shellfish culture KW - Isochrysis lutea KW - Crassostrea gigas N2 - Shellfish farming, a key sector of French aquaculture activity, allows the production of oyster spat in a controlled environment. Their production in commercial hatcheries requires control over the quality of the seawater used to sustain crossbreeding, breeding, and the production of fodder microalgae. Therefore, improving the filtration conditions of incoming water is crucial in ensuring the sustainability of production. An ultrafiltration pilot plant was therefore installed at Vendée Naissain. This ultrafiltration pilot plant allows filtration at 0.02 µm; it is used upstream of hatcheries to eliminate pathogens and parasites that can influence the development of cultivated species and downstream to remove oyster gametes in hatchery effluents. The objectives of this work were: (i) to use ultrafiltered seawater for the culture of the microalga Isochrysis lutea (T-Iso) to determine whether better growth than that observed with borehole water, historically used by the producer, can be achieved; and (ii) to determine whether the use of ultrafiltered water results in better fertilization rates of the cupped oyster Crassostrea gigas compared to filtered and UV-treated seawater. Ultrafiltered water has shown definite efficiency for culturing T-Iso with rapid growth and significant reduction in contamination compared to cultivation in well water. The contribution of ultrafiltered water in hatching is more nuanced; ultrafiltered water does not stabilize hatch rates, and its quality is highly dependent on the quality of the seawater used. Y1 - 2021/11 PB - Elsevier BV JF - Aquacultural Engineering SN - 0144-8609 VL - 95 ID - 84053 ER -